Although you might think I'm biased, since I've met Steve the past two years at Blizzcon, the site is a safe way to buy TCG items. They just send you the code to redeem, no physical card, but you don't really care about the card anyway, right?

Never had a problem with them. Good site and it's quick if you want your code right away instead of risking it on eBay (though I've never had a problem there either, just be sure your seller has a lot of good feedback). Plus by ordering new TCG items from them, you are always entered in a drawing for a much more valuable item.